Removing stock exh. mani heat shield
03-Mar-2004, 12:57 AM
#1
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Join Date: Jan 2004
Location: Ottawa, Ontario
Posts: 184
Removing stock exh. mani heat shield
Like holy crap...
Just got my alternator done
And as soon as i leave garage i hear some new rattling from under the hood
I had rattling before, it was the exhaust heat shield...
Now, I'm thinking this new noise might be coming from the exhaust manifold heat shields....
So anyone ever remove the bottom one, I think the top one is easy to remove, but I heard the bottom one is tougher...
any past experiences?
Just got my alternator done
And as soon as i leave garage i hear some new rattling from under the hood
I had rattling before, it was the exhaust heat shield...
Now, I'm thinking this new noise might be coming from the exhaust manifold heat shields....
So anyone ever remove the bottom one, I think the top one is easy to remove, but I heard the bottom one is tougher...
any past experiences?
03-Mar-2004, 03:22 PM
#4
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Join Date: Jul 2003
Location: Montreal
Posts: 4,508
Caution
dont remove the rear one lol ... I just went through all this crap... My ebrake cable seized up from the expanding and contracting of the rubber caused by the heat from the exhaust (cuz i removed all my heatshildes du to rattleing last season)...
actually dont remove any of them replace the bolts with stainless hardware!!
the heat will fry all your undercarrage bolts and maker them a bitch to remove someday, pluse the heat will cause more rusting... just fix it do it right.
dont say i didnt tell you so!
Ill be waiting for a dito from bbarblo lol
dont remove the rear one lol ... I just went through all this crap... My ebrake cable seized up from the expanding and contracting of the rubber caused by the heat from the exhaust (cuz i removed all my heatshildes du to rattleing last season)...
actually dont remove any of them replace the bolts with stainless hardware!!
the heat will fry all your undercarrage bolts and maker them a bitch to remove someday, pluse the heat will cause more rusting... just fix it do it right.
dont say i didnt tell you so!
Ill be waiting for a dito from bbarblo lol
03-Mar-2004, 03:34 PM
#5
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Join Date: Jan 2004
Location: Ottawa, Ontario
Posts: 184
hmm...well the holes around where the heat shield is held by the bolts are rusted through as well, so the bolts they do nothing..
actually I realized just 5 mins ago there's no points removing the bottom one
but the front one i wanna get rid of...is that gonna do any heat damage to anything?
I've seen many people w/ out them...so i dunno..
reply!
actually I realized just 5 mins ago there's no points removing the bottom one
but the front one i wanna get rid of...is that gonna do any heat damage to anything?
I've seen many people w/ out them...so i dunno..
reply!
03-Mar-2004, 03:48 PM
#6
Originally posted by BoOsTZeX
Caution
dont remove the rear one lol ... I just went through all this crap... My ebrake cable seized up from the expanding and contracting of the rubber caused by the heat from the exhaust (cuz i removed all my heatshildes du to rattleing last season)...
actually dont remove any of them replace the bolts with stainless hardware!!
the heat will fry all your undercarrage bolts and maker them a bitch to remove someday, pluse the heat will cause more rusting... just fix it do it right.
dont say i didnt tell you so!
Ill be waiting for a dito from bbarblo lol
Caution
dont remove the rear one lol ... I just went through all this crap... My ebrake cable seized up from the expanding and contracting of the rubber caused by the heat from the exhaust (cuz i removed all my heatshildes du to rattleing last season)...
actually dont remove any of them replace the bolts with stainless hardware!!
the heat will fry all your undercarrage bolts and maker them a bitch to remove someday, pluse the heat will cause more rusting... just fix it do it right.
dont say i didnt tell you so!
Ill be waiting for a dito from bbarblo lol
03-Mar-2004, 04:14 PM
#8
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Join Date: Jul 2003
Location: Montreal
Posts: 4,508
Originally posted by zc_hatch
i think he heans on the header... not the body but if im wrong... don't remove the heat sheilds under the car, just the header
i think he heans on the header... not the body but if im wrong... don't remove the heat sheilds under the car, just the header
but the body ones are usually the ones that rattle...
just dont remove the body sheilds
03-Mar-2004, 04:38 PM
#10
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Join Date: Jul 2003
Location: Newmarket
Posts: 1,121
what exactly does that heat shield do ? if you take it off wouldn't your header be cooler and so would your block from the air blowing in over the rad its not that hot of air ???? or is it to keep heat in ?
03-Mar-2004, 09:33 PM
#12
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Join Date: Jan 2004
Location: Ottawa, Ontario
Posts: 184
Originally posted by BoOsTZeX
ya I can agree with that, peeps running headders dont seem to have any problems...
but the body ones are usually the ones that rattle...
just dont remove the body sheilds
ya I can agree with that, peeps running headders dont seem to have any problems...
but the body ones are usually the ones that rattle...
just dont remove the body sheilds
and bbarbulo...ur plan won't work, cause it rattles, because the bottom 4th screw, does not touch the heat shield, since the heat shield has a hole rusted completely through
04-Mar-2004, 08:46 AM
#13
Pick up a new heatshield at the dealer, they are pretty cheap.
white and Brett, the heatshield keeps the hot exahust where it's supposed to go... through the exhaust. The hotter the exhaust, the faster it gets out, as the gas cools, it slows down. A heat shiled reflects heat back into the header rather than under the hood. Under the hood, the temps can increase significantly w/o a heat shield, and this makes your rad less efficient, the intake air warmer, not to mention hardening wires and hoses that will later cause problems (vacuum leaks and electrical probs).
Bottom line is, just cuz YOU don't know why it's there, doesn't mean it doesn't belong there. There is NOTHING on a Honda that doesn't serve a purpose.
Great example... my car came w/o any air conditioning... so there is on rad and one blank spot. In the blank spot there was a blockoff plate clipped in so that no air went through. I thought this was stupid!! Why NOT allow air through there to provide some underhood cooling??? Well, later when I learned more about thermodynamics and fluid behaviour... then I figured it out. By allowing air through the open space, you are actaully reducing the airflow over the ACTUAL EFFECTIVE cooling area - the rad so the fan had to kick in more often. Needless to say, I put everything back to the way I found it from the factory.
white and Brett, the heatshield keeps the hot exahust where it's supposed to go... through the exhaust. The hotter the exhaust, the faster it gets out, as the gas cools, it slows down. A heat shiled reflects heat back into the header rather than under the hood. Under the hood, the temps can increase significantly w/o a heat shield, and this makes your rad less efficient, the intake air warmer, not to mention hardening wires and hoses that will later cause problems (vacuum leaks and electrical probs).
Bottom line is, just cuz YOU don't know why it's there, doesn't mean it doesn't belong there. There is NOTHING on a Honda that doesn't serve a purpose.
Great example... my car came w/o any air conditioning... so there is on rad and one blank spot. In the blank spot there was a blockoff plate clipped in so that no air went through. I thought this was stupid!! Why NOT allow air through there to provide some underhood cooling??? Well, later when I learned more about thermodynamics and fluid behaviour... then I figured it out. By allowing air through the open space, you are actaully reducing the airflow over the ACTUAL EFFECTIVE cooling area - the rad so the fan had to kick in more often. Needless to say, I put everything back to the way I found it from the factory.
04-Mar-2004, 04:44 PM
#19
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Thread Starter
Join Date: Jan 2004
Location: Ottawa, Ontario
Posts: 184
Originally posted by bbarbulo
Pick up a new heatshield at the dealer, they are pretty cheap.
white and Brett, the heatshield keeps the hot exahust where it's supposed to go... through the exhaust. The hotter the exhaust, the faster it gets out, as the gas cools, it slows down. A heat shiled reflects heat back into the header rather than under the hood. Under the hood, the temps can increase significantly w/o a heat shield, and this makes your rad less efficient, the intake air warmer, not to mention hardening wires and hoses that will later cause problems (vacuum leaks and electrical probs).
Bottom line is, just cuz YOU don't know why it's there, doesn't mean it doesn't belong there. There is NOTHING on a Honda that doesn't serve a purpose.
Great example... my car came w/o any air conditioning... so there is on rad and one blank spot. In the blank spot there was a blockoff plate clipped in so that no air went through. I thought this was stupid!! Why NOT allow air through there to provide some underhood cooling??? Well, later when I learned more about thermodynamics and fluid behaviour... then I figured it out. By allowing air through the open space, you are actaully reducing the airflow over the ACTUAL EFFECTIVE cooling area - the rad so the fan had to kick in more often. Needless to say, I put everything back to the way I found it from the factory.
Pick up a new heatshield at the dealer, they are pretty cheap.
white and Brett, the heatshield keeps the hot exahust where it's supposed to go... through the exhaust. The hotter the exhaust, the faster it gets out, as the gas cools, it slows down. A heat shiled reflects heat back into the header rather than under the hood. Under the hood, the temps can increase significantly w/o a heat shield, and this makes your rad less efficient, the intake air warmer, not to mention hardening wires and hoses that will later cause problems (vacuum leaks and electrical probs).
Bottom line is, just cuz YOU don't know why it's there, doesn't mean it doesn't belong there. There is NOTHING on a Honda that doesn't serve a purpose.
Great example... my car came w/o any air conditioning... so there is on rad and one blank spot. In the blank spot there was a blockoff plate clipped in so that no air went through. I thought this was stupid!! Why NOT allow air through there to provide some underhood cooling??? Well, later when I learned more about thermodynamics and fluid behaviour... then I figured it out. By allowing air through the open space, you are actaully reducing the airflow over the ACTUAL EFFECTIVE cooling area - the rad so the fan had to kick in more often. Needless to say, I put everything back to the way I found it from the factory.
Today when I got an impact air gun to undo the screws, and take off the upper heat shield, i saw that piece of plastic as well, and i wondered the same thing, then i realized what its purpose was..Also it supposedly keeps dirt and **** from coming in. I was gonna remove it too but realized i shouldn't.
So i took the heat shield off, undid the 02 sensor then plugged it back...
And shlammed, my cat heat-shield was doing the same thing, i remove it about a month ago as well..no more rattling!
Lol after all this! THERE IS STILL RATTLING!! FUUUUUUUUUUUUUUCK!
Im gonna jack the car tomorrow and look at every single lil piece of metal I can find...this is really bothering me!!!!
But at least I'm eliminating every source...could also be the lower heat shield!!!
this is so frustrating
oh yah and I let my rad breath out the air bubbles today, I think the previous owner got a rad from SPi (i thinkt hat's what it's called), and they didn't flush it properly, so many air bubbles came out of the rad coolant today..crazy
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